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Lionel JUILLEN

TOULOUSE

En résumé

CAREER ASPIRATIONS
My career aspirations are to obtain a challenging position in a R&D department , to work on Airplane Future Projects and especially innovative structural and architectural concepts. It would also enables me share and develop my expertise in fuselage structural sizing, materials, numerical simulation, and use my experience in multi-cultural technical and multi-disciplines environments (aerospace and automotive industries).

COMPETENCES
•20 years of experience in research and development activities in aerospace and automotive industries
•Large experience in structural sizing of aeronautical structure (metallic and composite materials)

•Advanced knowledge of finite element modeling techniques and related softwares
•Advanced knowledge of numerical optimization, statistical methods (Design of Experiments) in the mechanical engineering field
•Large experience in :
- transforming real world engineering design problems into scientific and mathematical solutions
- specifying IT/computer solutions/prototypes and deploying them to customers

•Experienced in :
- team and subcontractors management
- Scientific Projects management


I am AIAA senior Member

Spécialisations : Structural Design optimization, Finite element methods, structural aerospace and automotive engineering, mechanical design, numerical analysis, mathematical programming

Mes compétences :
Calcul de structures
Éléments finis
FORTRAN
PYTHON

Entreprises

  • AIRBUS France - Aerospace Structural analysis specialist

    2002 - maintenant General structural analyst specialist
    Nose Center Fuselage Center Of Excellence. – Stress TransverseTeam A350XWB CWB
    Missions :
    Analyse metallic and composite structures : Stability & Static strength, fatigue and damage tolerance. Create and approve data used in structural analysis. Develop new techniques and methods for project use. Development of processes that allow design features and materials to be combined in designs that optimise use of topology, form and material for a given set of loads and boundary conditions. Technical Support and assistance to Airbus Programs as finite element expert (Patran & Nastran) to A350XWB stress teams.

    Main Realisations (since 2002):
    *A380F Barrier wall feasibility study. Joint-authoring of 2 patents.

    *Development of tools and parametric studies :
    - for Window frame shape optimisation.
    - Mesh morphing of Global FEM for Advanced Projects parametric studies.

    *NOFUDEM Research Project : management of Global FEM (Finite Element Model), stress leader of the Cockpit WP.

    *A350XWB: Development of softwares to build automatically stiffened panels finite element models: knowledge transfer and deployment to Airbus and Risk Sharing Partners (RSP) stress teams. Development of a software to build hybrid frame coupling Detailed models in window frame area. Animation of Detailed FEM activities between Design/Stress Teams of A350 XWB Center Fuselage Section. Organisation, rationalisation and follow-up of DFEM activities at Center Fuselage section level. Animation of weekly meetings with WP stress teams. Configuration management of large models and mesh/CAD link. Planning, steering of large projects in collaboration with up to 5 WPs and subcontractors, scheduled with GFEM (Global Finite Element Model) milestones. Collaborations with COC (Center Of Competences) for needs gathering, consolidation and productivity tools improvements requirements definition.

  • RENAULT S.A. - Numerical Optimization specialist - Research Engineer

    Boulogne-Billancourt 1995 - 2002 Missions:
    Demonstrate that design optimisation techniques may be useful for the Renault design offices.
    Solve difficult Renault engineering problems with numerical optimisation techniques.
    Develop innovative solutions. Deploy numerical design optimisation reseach works and results and train Renault design offices engineers to these techniques. Collaborate with academic researchers and/or industrial partners by conducting projects. Management of subcontractors, coaching of PhD and graduate students. Technological Awareness.

    Main Realisations:
    Creation of a new global optimisation algorithm with kriging metamodels to solve engineering problems with CPU expansive analyses. Applications: induction heat treatment process optimisation, car body paint process optimisation, shape optimisation of a truck crash absorber (15% weight reduction w.r.t. existing design).

    Creation of a shape optimisation methodology taking into account a fatigue life criteria (Dang Van). Development of the associated Sensitivity analysis. Application: shape optimisation of an engine conrod.

    Calibration of many numerical models in the fields of passive safety, acoustic and casting process simulations.

    Development of an efficient Interior point algorithm for engineering design problems (Collaboration with Prof. Herskovits - Univ. Rio de Janeiro) : FAIPA algorithm (http://www.optimize.ufrj.br/jose/articles.htm).

    Studies of SAND methodologies (Simultaneous Analysis aNd Design) applied to topology optimization.

    Development of multi-objective optimization algorithm (NBI method) Fortran library.

    Development of scientific softwares : 27 soleau enveloppes.

  • TEUCHOS - R&D engineer

    1994 - 1995 Contribution to the CLIP software family (Thermoplastic resin injection process simulation) coding : R.T.M process simulation module. (C & Fortran)
    Customer : Renault Research Department

  • AUXIRBAT Etudes - R&D Engineer

    1992 - 1994 *Mechanical parts shape optimization. Design of a Fortran non linear programming software linked with MSC Nastran under CRAY-YMP environment
    customer: Renault Research Department (Fortran and C programming)
    *Numerical simulation of D-engine block-cylinder casing clamping for broaching process. Subcontractors test campaigns following (Germany and Italy)
    customer: Renault Direction of Engineering Support

Formations

Réseau

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